Software: If the user excludes voxels from the Gamma calculation that are below a dose threshold (Suppress gamma calculation), the Gamma Passing Rate (GPR) calculated for individual ROIs is not correct. The GPR calculated by VERIQA overestimates the correct GPR. The evaluation can therefore show false positive results.
PTW-FREIBURG
Generated calibration file will not be correct in case of a relative calibration of an OCTAVIUS Detector 1000 or OCTAVIUS Detector 1600, if a Tiff file or a DICOM data set is used as reference matrix. Therefore, the measurement result will be incorrect by using such a calibration file.
Class I - Dangerous
In some cases, especially with high dose-per-pulse-rates typical for particle (specifically proton) therapy, measuring errors can result. Individual measurement intervals can be lost that are not visible to the user when there is a high dose-per-pulse rate resulting in a too-low dose being displayed on the monitor. This could result in a radiation over-exposure.